Mariners vs. White Sox Dunkel MLB Picks, Predictions and Prop Bets - May 9

The Chicago White Sox hope to stop their three-game losing run against the Seattle Mariners, at 7:10 p.m. ET on Saturday. Luis Castillo (0-3, 6.29 ERA) will start for the Mariners, who are 19-20 this season and second in the AL West. Anthony Kay (1-1, 5.70 ERA) is starting for the White Sox, who are 17-21 and fourth in the AL Central.

Despite playing away from their home ballpark, the Mariners are favored to win (-129) over the White Sox (+109). The over/under for the Mariners-White Sox game is set at 9.5.

Mariners vs. White Sox Odds, Game Time

• Game day: Saturday, May 9, 2026
• Game time: 7:10 p.m. ET
• Location: Chicago, Illinois
• Stadium: Rate Field
• Favorite: Mariners (-129)
• Underdog: White Sox (+109)
• Over/under: 9.5

How to Watch Mariners vs. White Sox

• TV Channel: CHSN and SEAM
• Live Stream: Fubo (Watch for free)

Bet now on FanDuel Sportsbook!

Mariners vs. White Sox: Betting the Moneyline

• The Mariners have won 18 of the 35 games they were the moneyline favorite this season (51.4%).
• Chicago has come away with 15 wins in the 33 contests it has been listed as the underdogs in this season.
• Seattle has a record of 17-9, a 65.4% win rate, when favored by -129 or more by sportsbooks this season.
• The White Sox have a win-loss record of 14-16 when favored by +109 or worse by sportsbooks this year.
• Based on this contest's moneyline, the Mariners have an implied win probability of 56.3%.
• The White Sox have an implied victory probability of 47.8% according to the moneyline set for this matchup.

Mariners vs. White Sox: Betting the Spread & Total

• The Mariners have combined with opponents to hit the over on the total 18 times this season for an 18-20-1 record against the over/under.
• Chicago and its opponents have hit the over in 21 of its 38 games with a total this season.
• The Mariners have collected a 14-25-0 record ATS this season (covering only 35.9% of the time).
• In 38 games with a line this season, the White Sox have a mark of 20-18-0 against the spread.